Principles of distillation
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I would like to ask everyone: in Tianjin Chuangju’s three-column distillation technology, the pre-column is used to remove light components based on their low boiling points. So how are the heavier components and water removed? I’m just starting to learn *distillation; I hope experienced colleagues can give me some guidance
It is recommended to get a book on \"Principles of Chemical Engineering\" to read; it is a reference book for this field. For reference.
The process flow of triple-column distillation is roughly as follows: First, crude methanol is neutralized with dilute alkali, and then it enters the corresponding pre-distillation column via a methanol preheater. In this pre-distillation column, the residual dissolved gases and low-boiling-point substances present in the crude methanol are removed. The temperature at the bottom of this column is around 78°C. At this point, the methanol is pumped, preheated by the preheater, and then sent to the corresponding pressure column. Inside the pressure column, the methanol vapor exiting from the top of the column enters another column under normal pressure, where it condenses; this process also provides heat for that column.